| /* |
| * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org> |
| * Copyright (C) 2007 Eric Seidel <eric@webkit.org> |
| * Copyright (C) 2008 Apple Inc. All rights reserved. |
| * Copyright (C) Research In Motion Limited 2012. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| |
| #include "core/svg/SVGTransformList.h" |
| |
| #include "core/SVGNames.h" |
| #include "core/svg/SVGAnimateTransformElement.h" |
| #include "core/svg/SVGAnimatedNumber.h" |
| #include "core/svg/SVGParserUtilities.h" |
| #include "core/svg/SVGTransformDistance.h" |
| #include "wtf/text/StringBuilder.h" |
| #include "wtf/text/WTFString.h" |
| |
| namespace blink { |
| |
| inline PassRefPtrWillBeRawPtr<SVGTransformList> toSVGTransformList(PassRefPtrWillBeRawPtr<SVGPropertyBase> passBase) |
| { |
| RefPtrWillBeRawPtr<SVGPropertyBase> base = passBase; |
| ASSERT(base->type() == SVGTransformList::classType()); |
| return static_pointer_cast<SVGTransformList>(base.release()); |
| } |
| |
| SVGTransformList::SVGTransformList() |
| { |
| } |
| |
| SVGTransformList::~SVGTransformList() |
| { |
| } |
| |
| PassRefPtrWillBeRawPtr<SVGTransform> SVGTransformList::consolidate() |
| { |
| AffineTransform matrix; |
| if (!concatenate(matrix)) |
| return SVGTransform::create(); |
| |
| RefPtrWillBeRawPtr<SVGTransform> transform = SVGTransform::create(matrix); |
| clear(); |
| return appendItem(transform); |
| } |
| |
| bool SVGTransformList::concatenate(AffineTransform& result) const |
| { |
| if (isEmpty()) |
| return false; |
| |
| ConstIterator it = begin(); |
| ConstIterator itEnd = end(); |
| for (; it != itEnd; ++it) |
| result *= it->matrix(); |
| |
| return true; |
| } |
| |
| namespace { |
| |
| template<typename CharType> |
| int parseTransformParamList(const CharType*& ptr, const CharType* end, float* values, int required, int optional) |
| { |
| int parsedParams = 0; |
| int maxPossibleParams = required + optional; |
| |
| bool trailingDelimiter = false; |
| |
| skipOptionalSVGSpaces(ptr, end); |
| while (parsedParams < maxPossibleParams) { |
| if (!parseNumber(ptr, end, values[parsedParams], DisallowWhitespace)) |
| break; |
| |
| ++parsedParams; |
| |
| if (skipOptionalSVGSpaces(ptr, end) && *ptr == ',') { |
| ++ptr; |
| skipOptionalSVGSpaces(ptr, end); |
| |
| trailingDelimiter = true; |
| } else { |
| trailingDelimiter = false; |
| } |
| } |
| |
| if (trailingDelimiter || !(parsedParams == required || parsedParams == maxPossibleParams)) |
| return -1; |
| |
| return parsedParams; |
| } |
| |
| // These should be kept in sync with enum SVGTransformType |
| static const int requiredValuesForType[] = {0, 6, 1, 1, 1, 1, 1}; |
| static const int optionalValuesForType[] = {0, 0, 1, 1, 2, 0, 0}; |
| |
| template<typename CharType> |
| PassRefPtrWillBeRawPtr<SVGTransform> parseTransformOfType(unsigned type, const CharType*& ptr, const CharType* end) |
| { |
| if (type == SVG_TRANSFORM_UNKNOWN) |
| return nullptr; |
| |
| int valueCount = 0; |
| float values[] = {0, 0, 0, 0, 0, 0}; |
| if ((valueCount = parseTransformParamList(ptr, end, values, requiredValuesForType[type], optionalValuesForType[type])) < 0) { |
| return nullptr; |
| } |
| |
| RefPtrWillBeRawPtr<SVGTransform> transform = SVGTransform::create(); |
| |
| switch (type) { |
| case SVG_TRANSFORM_SKEWX: |
| transform->setSkewX(values[0]); |
| break; |
| case SVG_TRANSFORM_SKEWY: |
| transform->setSkewY(values[0]); |
| break; |
| case SVG_TRANSFORM_SCALE: |
| if (valueCount == 1) // Spec: if only one param given, assume uniform scaling |
| transform->setScale(values[0], values[0]); |
| else |
| transform->setScale(values[0], values[1]); |
| break; |
| case SVG_TRANSFORM_TRANSLATE: |
| if (valueCount == 1) // Spec: if only one param given, assume 2nd param to be 0 |
| transform->setTranslate(values[0], 0); |
| else |
| transform->setTranslate(values[0], values[1]); |
| break; |
| case SVG_TRANSFORM_ROTATE: |
| if (valueCount == 1) |
| transform->setRotate(values[0], 0, 0); |
| else |
| transform->setRotate(values[0], values[1], values[2]); |
| break; |
| case SVG_TRANSFORM_MATRIX: |
| transform->setMatrix(AffineTransform(values[0], values[1], values[2], values[3], values[4], values[5])); |
| break; |
| } |
| |
| return transform.release(); |
| } |
| |
| } |
| |
| template<typename CharType> |
| bool SVGTransformList::parseInternal(const CharType*& ptr, const CharType* end) |
| { |
| clear(); |
| |
| bool delimParsed = false; |
| while (ptr < end) { |
| delimParsed = false; |
| SVGTransformType transformType = SVG_TRANSFORM_UNKNOWN; |
| skipOptionalSVGSpaces(ptr, end); |
| |
| if (!parseAndSkipTransformType(ptr, end, transformType)) |
| return false; |
| |
| if (!skipOptionalSVGSpaces(ptr, end) || *ptr != '(') |
| return false; |
| ptr++; |
| |
| RefPtrWillBeRawPtr<SVGTransform> transform = parseTransformOfType(transformType, ptr, end); |
| if (!transform) |
| return false; |
| |
| if (!skipOptionalSVGSpaces(ptr, end) || *ptr != ')') |
| return false; |
| ptr++; |
| |
| append(transform.release()); |
| |
| skipOptionalSVGSpaces(ptr, end); |
| if (ptr < end && *ptr == ',') { |
| delimParsed = true; |
| ++ptr; |
| skipOptionalSVGSpaces(ptr, end); |
| } |
| } |
| |
| return !delimParsed; |
| } |
| |
| bool SVGTransformList::parse(const UChar*& ptr, const UChar* end) |
| { |
| return parseInternal(ptr, end); |
| } |
| |
| bool SVGTransformList::parse(const LChar*& ptr, const LChar* end) |
| { |
| return parseInternal(ptr, end); |
| } |
| |
| String SVGTransformList::valueAsString() const |
| { |
| StringBuilder builder; |
| |
| ConstIterator it = begin(); |
| ConstIterator itEnd = end(); |
| while (it != itEnd) { |
| builder.append(it->valueAsString()); |
| ++it; |
| if (it != itEnd) |
| builder.append(' '); |
| } |
| |
| return builder.toString(); |
| } |
| |
| void SVGTransformList::setValueAsString(const String& value, ExceptionState& exceptionState) |
| { |
| if (value.isEmpty()) { |
| clear(); |
| return; |
| } |
| |
| bool valid = false; |
| if (value.is8Bit()) { |
| const LChar* ptr = value.characters8(); |
| const LChar* end = ptr + value.length(); |
| valid = parse(ptr, end); |
| } else { |
| const UChar* ptr = value.characters16(); |
| const UChar* end = ptr + value.length(); |
| valid = parse(ptr, end); |
| } |
| |
| if (!valid) { |
| clear(); |
| exceptionState.throwDOMException(SyntaxError, "Problem parsing transform list=\""+value+"\""); |
| } |
| } |
| |
| PassRefPtrWillBeRawPtr<SVGPropertyBase> SVGTransformList::cloneForAnimation(const String& value) const |
| { |
| ASSERT(RuntimeEnabledFeatures::webAnimationsSVGEnabled()); |
| return SVGListPropertyHelper::cloneForAnimation(value); |
| } |
| |
| PassRefPtrWillBeRawPtr<SVGTransformList> SVGTransformList::create(SVGTransformType transformType, const String& value) |
| { |
| RefPtrWillBeRawPtr<SVGTransform> transform = nullptr; |
| if (value.isEmpty()) { |
| } else if (value.is8Bit()) { |
| const LChar* ptr = value.characters8(); |
| const LChar* end = ptr + value.length(); |
| transform = parseTransformOfType(transformType, ptr, end); |
| } else { |
| const UChar* ptr = value.characters16(); |
| const UChar* end = ptr + value.length(); |
| transform = parseTransformOfType(transformType, ptr, end); |
| } |
| |
| RefPtrWillBeRawPtr<SVGTransformList> svgTransformList = SVGTransformList::create(); |
| if (transform) |
| svgTransformList->append(transform); |
| return svgTransformList.release(); |
| } |
| |
| void SVGTransformList::add(PassRefPtrWillBeRawPtr<SVGPropertyBase> other, SVGElement* contextElement) |
| { |
| if (isEmpty()) |
| return; |
| |
| RefPtrWillBeRawPtr<SVGTransformList> otherList = toSVGTransformList(other); |
| if (length() != otherList->length()) |
| return; |
| |
| ASSERT(length() == 1); |
| RefPtrWillBeRawPtr<SVGTransform> fromTransform = at(0); |
| RefPtrWillBeRawPtr<SVGTransform> toTransform = otherList->at(0); |
| |
| ASSERT(fromTransform->transformType() == toTransform->transformType()); |
| clear(); |
| append(SVGTransformDistance::addSVGTransforms(fromTransform, toTransform)); |
| } |
| |
| void SVGTransformList::calculateAnimatedValue(SVGAnimationElement* animationElement, float percentage, unsigned repeatCount, PassRefPtrWillBeRawPtr<SVGPropertyBase> fromValue, PassRefPtrWillBeRawPtr<SVGPropertyBase> toValue, PassRefPtrWillBeRawPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement* contextElement) |
| { |
| ASSERT(animationElement); |
| bool isToAnimation = animationElement->animationMode() == ToAnimation; |
| |
| // Spec: To animations provide specific functionality to get a smooth change from the underlying value to the |
| // 'to' attribute value, which conflicts mathematically with the requirement for additive transform animations |
| // to be post-multiplied. As a consequence, in SVG 1.1 the behavior of to animations for 'animateTransform' is undefined |
| // FIXME: This is not taken into account yet. |
| RefPtrWillBeRawPtr<SVGTransformList> fromList = isToAnimation ? PassRefPtrWillBeRawPtr<SVGTransformList>(this) : toSVGTransformList(fromValue); |
| RefPtrWillBeRawPtr<SVGTransformList> toList = toSVGTransformList(toValue); |
| RefPtrWillBeRawPtr<SVGTransformList> toAtEndOfDurationList = toSVGTransformList(toAtEndOfDurationValue); |
| |
| size_t toListSize = toList->length(); |
| if (!toListSize) |
| return; |
| |
| // Get a reference to the from value before potentially cleaning it out (in the case of a To animation.) |
| RefPtrWillBeRawPtr<SVGTransform> toTransform = toList->at(0); |
| RefPtrWillBeRawPtr<SVGTransform> effectiveFrom = nullptr; |
| // If there's an existing 'from'/underlying value of the same type use that, else use a "zero transform". |
| if (fromList->length() && fromList->at(0)->transformType() == toTransform->transformType()) |
| effectiveFrom = fromList->at(0); |
| else |
| effectiveFrom = SVGTransform::create(toTransform->transformType(), SVGTransform::ConstructZeroTransform); |
| |
| // Never resize the animatedTransformList to the toList size, instead either clear the list or append to it. |
| if (!isEmpty() && (!animationElement->isAdditive() || isToAnimation)) |
| clear(); |
| |
| RefPtrWillBeRawPtr<SVGTransform> currentTransform = SVGTransformDistance(effectiveFrom, toTransform).scaledDistance(percentage).addToSVGTransform(effectiveFrom); |
| if (animationElement->isAccumulated() && repeatCount) { |
| RefPtrWillBeRawPtr<SVGTransform> effectiveToAtEnd = !toAtEndOfDurationList->isEmpty() ? PassRefPtrWillBeRawPtr<SVGTransform>(toAtEndOfDurationList->at(0)) : SVGTransform::create(toTransform->transformType(), SVGTransform::ConstructZeroTransform); |
| append(SVGTransformDistance::addSVGTransforms(currentTransform, effectiveToAtEnd, repeatCount)); |
| } else { |
| append(currentTransform); |
| } |
| } |
| |
| float SVGTransformList::calculateDistance(PassRefPtrWillBeRawPtr<SVGPropertyBase> toValue, SVGElement*) |
| { |
| // FIXME: This is not correct in all cases. The spec demands that each component (translate x and y for example) |
| // is paced separately. To implement this we need to treat each component as individual animation everywhere. |
| |
| RefPtrWillBeRawPtr<SVGTransformList> toList = toSVGTransformList(toValue); |
| if (isEmpty() || length() != toList->length()) |
| return -1; |
| |
| ASSERT(length() == 1); |
| if (at(0)->transformType() == toList->at(0)->transformType()) |
| return -1; |
| |
| // Spec: http://www.w3.org/TR/SVG/animate.html#complexDistances |
| // Paced animations assume a notion of distance between the various animation values defined by the 'to', 'from', 'by' and 'values' attributes. |
| // Distance is defined only for scalar types (such as <length>), colors and the subset of transformation types that are supported by 'animateTransform'. |
| return SVGTransformDistance(at(0), toList->at(0)).distance(); |
| } |
| |
| } |